HBO, Sports Illustrated and Endgame Entertainment, in association with Playground for Sport in America have teamed up for "Sport in America: Our Defining Stories," a documentary series set to air on HBO in 2013. Their goal: "a sweeping cross-platform examination of how the universal thread of sport has shaped America’s character." HBO Sports exec producer Rick Bernstein says: "This is one of the most ambitious sports projects that HBO has launched." Sports Illustrated editorial packages and content on HBO and SI's social media platforms will accompany the series.

HBO, Sports Illustrated and Endgame Entertainment, in association with Playground for Sport in America have teamed up for "Sport in America: Our Defining Stories," a documentary series set to air on HBO in 2013. Their goal: "a sweeping cross-platform examination of how the universal thread of sport has shaped America’s character." HBO Sports exec producer Rick Bernstein says: "This is one of the most ambitious sports projects that HBO has launched." Sports Illustrated editorial packages and content on HBO and SI's social media platforms will accompany the series.

Endgame's James D. Stern and Adam Del Deo ("Every Little Step") will direct and exec produce alongside Playground's Colin Callender and Time Inc. Sports Group editor Terry McDonell, who adds: “We are proud to be working on a project that reflects sport and the human spirit, a connection that speaks directly to who we are.”

The filmmakers want you to be involved, too. Starting today, you can record and submit videos in which you discuss your favorite sports memories. Select fan videos will be included in the series. More info here.